This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The port property of the Location interface is a string containing the port number of the location's URL. If the port is the default for the protocol (80 for ws: and http:, 443 for wss: and https:, and 21 for ftp:), this property contains an empty string, "".
This property can be set to change the port of the URL. If the URL has no host or its scheme is file:, then setting this property has no effect. It also silently ignores invalid port numbers.
See URL.port for more information.
A string.
// Assume current page is at https://developer.mozilla.org/en-US/docs/Location/port const result = location.port; // Returns:''
// Assume another page is at https://developer.mozilla.org:8888/en-US/docs/Location/port const result = location.port; // Returns:'8888'
| Specification |
|---|
| HTML> # dom-location-port-dev> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
port |
1 | 12 | 1 | ≤12.1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/Location/port